Description: 1. USB interface: connect the USB drive (maximum support 32GB); 2. LED screen: digital display; 3. MIC: supports call and recording function; 4. IR: Infrared receiving module; 5. VOL+/VOL-: Rotate to the right to increase volume, rotate to the left to decrease volume; 6. MODE: switch between USB / TF / FM / AUX / BT; 7. REC: long press the REC button to start recording, press the REC button again to cancel recording and play the recorded file; recording requires a storage device such as a USB drive or TF card; 8. PLAY/PAUSE: short press to pause and play; long press for FM automatic station scan; 9. Microphone interface; 10. TF card slot: connect TF memory card (maximum support 32GB); 11. AUX interface: audio input interface; 12. NEXT: short press to select the next song; long press for fast forward; double click to switch folder; 13. PREV: short press to select the previous song; long press for fast rewind; double click to switch folder; Color: black Material: ABS Package Contents: 1 set of MP3 decoder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product. Measurement allowed error is +/- 1-3cm.